2316405 has 32 divisors (see below), whose sum is σ = 4564224. Its totient is φ = 976896.

The previous prime is 2316383. The next prime is 2316407. The reversal of 2316405 is 5046132.

It is a happy number.

2316405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2316405 - 2⁵ = 2316373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

2316405 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2316407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 517 + ... + 2213.

It is an arithmetic number, because the mean of its divisors is an integer number (142632).

2^2316405 is an apocalyptic number.

It is an amenable number.

2316405 is a deficient number, since it is larger than the sum of its proper divisors (2247819).

2316405 is a wasteful number, since it uses less digits than its factorization.

2316405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2316405 is about 1521.9740470849. The cubic root of 2316405 is about 132.3137052034.

The spelling of 2316405 in words is "two million, three hundred sixteen thousand, four hundred five".